Drier.



R. BERNHARD.

Patented Apr. 3,1917.

2 SHEETS-SHEET l.

f Patented Apr. 3,1917.

2 SHEETS-SHEET 2 R..BER`NHARD.

DRIER.

APPLICATION FILED SEPT. 5. |914.

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Cir

Specification of Letters Patent.

wisconsin, nssiGNOE, BY'MEsNE essieu- MACHINERY CORPORATION, A CORPORATION IDBIER.

- Patented Apr'. 3, 1917.

Application led September 5, 1914. Serial No. 860,326.

To all whom it may concern: A

Be it known that I, RICHARD BERNHARD, a

citizen of the United. States, residing at Milwaukee, in the county of Milwaukee andl y State of Wiscousimhave invented certain new and useful Improvements in Driers, of

which the following is a specification, refers.

ence being had to the accompanying drawing, forminga part thereof.v

This invention relates to `driers and the objects of the invention are to improve driers in the manner to be hereinafter described and claimed.V

Referring to @my of, which drawings illustrate an embodiment of this invention, and on which drawings the same reference characters are used to designate the same parts wherever they may appear in each of the several views, Figure 1 is a vertical, longitudinal section of,a drier; Fig. 2 is a vertical, transverse section taken on the linea-a on Fig. 1', looking in the direction indicated bythe arrows; Fig. 3 is a vertical, transverse section taken on the line b--b on Fig. 1, looking in the direction indicated by the arrows; Fig. 4 is an elevation of parts on an enlarged scale; and Fig. 5' is a section taken on the line 5--5V on Fig. 4, looking in the direction indicated by the arrows.

Referring to the drawings, the reference numeral 1 designates a furnace, 2 an inclined, revoluble shell, and 1 3 an exhaust chamber. The shell 2 is preferably cylindrical and is provided with a gear 4, track ring 5, and a track and a thrust ring 6. The gear 7 meshes with gear 4 to revolve the shell and may be driven in any suitable manner. The track rings 5 and 6 run upon antifriction wheels 8 and 9 and the thrust ring 6 revolves between antifriction, track and thrust the drawings which `accomwheels 10 and 11. The front end of the shell y chamber 3 through an and the top 13 of the exhaust chamber is removable4 so that access can be had to the interior of the chamber. The shell 2 has a flue 14 extending throughout the greater portion of its length terminating short of both ends of the shell. The reference numeral 15 designates a flue or pipe, preferably made of cast iron, which forms a continuation of flue 14 andl which extends beyond the end of shell .2 and out through the side of the exhaust chamber enters the exhaust opening 12 therein surrounded by ,this specification and form a part here- -butthrough an opening 16. The opening 16 is a clamp Iring 17' made in halves and provided with an internal groove 18v in which is placed freely on flue or pipe 15. The end of the shell 2 within the exhaust chamber 3 is open except for a flange 20 and the flue o-r pipe 15 is held centrally and removably in position by four adjustable eye bolts 21, only two of which 'are vshown by the drawings. T he .flue or pipe 15 is slipped over an enlargement 22 of the flue 14 made'in the form of a pipe or cylinder; The hot gases and {iame are c011- ducted from furnace 1 to the pipe l5 and flue 14 through a fixed flue 23 lined with brick 24; This flue at one end is bolted to a 4flange Acasting 25 and its other end is received within the clamp ring 17.

A fan connects with the interior of the exhaust chamber 3 and discharges into the `stack 26, being driven by the pulley 27.

A chute 28 extends into the exhaust chamber 3 to discharge the material to be dried into the shell 2A atits front end where the material is forced into the drying chambers of the shell by gravity andthe action of the inclined blades or flights 29. The rear end of theshell is closed except for the openings through the discharge spout 30 and buckets shape of arcs of circles. Each of these par-ti tions is fastened at one edge to the shell 2 and at its other edge the next adjacentpartition, as clearly shown by Fig. 3 of the drawings. As these partitions are exposed to a higher temperature than the shell 2, their form allows them to expand and contract under theinfluence of changes of temperature without injuriously affectingl the shell. In order to provide for the longitudinal expansion and contraction of the partitions 32, 33, 34 and 35 they are made in several lengths with the ends of the lengths in alinement but separated sufficiently to allow for the expansion and the joints between the lengths are made practically tight by butt straps 36 lwhich are secured in any suitable manner, by rivets for example, to one length only and extend over to the convex side of the oint onto the next adjacent length. The several lengths of the partitions are secured to the shell 2 by bolts which extend through The operation ofthe apparatus is as foli lows: The flame'and hot gases from the furnace l pass through flue 23, flue or pipe 15, and iue 1l heating the partitions 32, 33, 3ft and 35. The gases will have cooled below the ignition temperature before reaching the end of flue 1l even if the combustible gases have not been entirely'consumed. The fan draws the gases back through lthe drying chambers 37, 38, 39 and 40, drying the material therein, and the gases pass into 1- the exhaust chamber 3 and out through the stack 26. Air enters the drying chambers through the discharge spout 30 and mixes with the gases from flue 14. Material to be dried is fed through chute 28 into the end of the shell 2 and by gravity and the inclined blades-or flights 29 is crowded into the drying chambers. Owing to the inclination of the shell 2, the material works along the shell, as itrevolves, until it falls from the drying chambers at the end of shell 2 .Where it is picked up by the buckets and discharged through the discharge spout 80. The shell 2 is revolved in the direction indicated by the arrow on Fig. 3 of the drawings and it will be noticed from an inspection of F ig. 3 that during a part of a revolution of shell 2 the material to bel dried will lie upon a highlyheated partition and will be heated to drive the moisture therefrom. The hot gases passing through the drying chambers will absorb the moisture andtend to maintain the heated condition of the material and the air which enters through the discharge spout 30 and mixes with the hot gases increases the total volume of gases and, consequently, their moisture absorbing capacit l What is claimed is:

1. The combination with a revoluble shell `tween the sections the sections.

of a plurality of transversely curved partitions connected with the shell and with each other to forni a line and drying chambers.

2. The combination with a revoluble shell of a plurality of transversely curved partitions connected with theshell and with each other to form a flue and drying chambers, each of said partitions being composed of sections with the ends of the sections forining .such partition approximately in line with each other, and butt straps extending over the joints between adjacent sections and secured to one of said sections.

3. The combination with a revoluble shell of a plurality of transversely curved partitions movably secured to the shell and secured to each other to form a flue and drying chambers, each of said partitions being composed of sections with their ends approximately in line with each other, and

butt straps extending over the 'joints beand secured to one of 4. The combination with a revoluble shell Aof a plurality of transversely curved parti- 4 tions composed of sections, each section being movably secured to the shell and secured to another section to form a flue and drying chambers, and means to close the joint between'the ends of sections forming a partition While permitting relative movements between said ends.

5. The combination with a revoluble shell provided with partitions extending for a part of the length thereof to form a Hue and drying chambers, of a pipe secured to said shell and communicating *with said Hue. l

6. The combination withv a revoluble shell provided with partitions extending for a part of the length thereof to form a flue and drying chambers, of an exhaust chamber into which one end of the shell extends, a pipe secured to said shell, communicating with said flue andvextending out through an opening in said exhaust chamber, a grooved clamp' ring secured to the exhaust chamber, and a ring on said pipe engaged with said clamp ring.

In witness whereof I hereto aliix my signature in presence of two witnesses.

. RICHARD BERNHARD.

Witnesses:

JOHN I-I. HURLEY, FRANK E. BENNETT. 

